# Contributor: Eric Molitor <eric@molitor.org>
# Contributor: Jakub Jirutka <jakub@jirutka.cz>
# Contributor: Rasmus Thomsen <oss@cogitri.dev>
# Maintainer: Natanael Copa <ncopa@alpinelinux.org>
pkgname=lld
pkgver=17.0.6
pkgrel=0
_llvmver=${pkgver%%.*}
pkgdesc="The LLVM Linker"
url="https://llvm.org/"
arch="all"
license="Apache-2.0"
depends_dev="$pkgname=$pkgver-r$pkgrel"
makedepends="
	clang
	cmake
	compiler-rt
	libedit-dev
	libxml2-dev
	llvm$_llvmver-dev
	llvm$_llvmver-gtest
	llvm$_llvmver-static
	llvm$_llvmver-test-utils
	llvm-libunwind-dev
	patchelf
	samurai
	scudo-malloc
	zlib-dev
	"
checkdepends="gtest-dev bash llvm$_llvmver-test-utils"
subpackages="$pkgname-dbg $pkgname-libs $pkgname-dev $pkgname-doc"
source="https://github.com/llvm/llvm-project/releases/download/llvmorg-${pkgver//_/-}/lld-${pkgver//_/}.src.tar.xz
	https://github.com/llvm/llvm-project/releases/download/llvmorg-${pkgver//_/-}/cmake-${pkgver//_/}.src.tar.xz
	"
builddir="$srcdir/$pkgname-${pkgver//_/}.src"

prepare() {
	default_prepare
	mv "$srcdir"/cmake-${pkgver//_/}.src "$srcdir"/cmake
}

build() {
	CFLAGS="$CFLAGS -O2 -DNDEBUG -g1" \
	CXXFLAGS="$CXXFLAGS -O2 -DNDEBUG -g1" \
	CC=clang CXX=clang++ \
	cmake -B build -G Ninja -Wno-dev \
		-DCMAKE_BUILD_TYPE=None \
		-DCMAKE_INSTALL_PREFIX=/usr \
		-DCMAKE_SKIP_INSTALL_RPATH=ON \
		-DBUILD_SHARED_LIBS=ON \
		-DLLVM_INCLUDE_TESTS="$(want_check && echo ON || echo OFF)" \
		-DLLVM_EXTERNAL_LIT=/usr/bin/lit \
		-DLLD_BUILT_STANDALONE=ON \
		-DCMAKE_EXE_LINKER_FLAGS="$LDFLAGS -Wl,-z,stack-size=2097152"
	cmake --build build
}

check() {
	ninja -C build check-lld
}

package() {
	DESTDIR="$pkgdir" cmake --install build
	install -Dm644 "$builddir"/docs/ld.lld.1 -t "$pkgdir"/usr/share/man/man1/

	# we have the scudo allocator available, so link lld to it to
	# significantly improve performance, especially in LTO contexts
	patchelf --add-needed libscudo.so "$pkgdir"/usr/bin/lld
}

sha512sums="
55955fc24b3fb87012486618cf227a1640ad9a6d607c898d890337aa8c28f3e6a9ed48a52bd0ed57f365f0dc5081a6b3a037cb65da9a9f2cbc53a1527cb8db60  lld-17.0.6.src.tar.xz
b2c5e404ca36542d44e1a7f2801bbcecbcf5f1e8c63b793bb2308228483406bdfe002720aadb913c0228cd2bbe5998465eaadc4a49fad6a5eb6ff907fa5fd45a  cmake-17.0.6.src.tar.xz
"
